I have a sick hen. She hasn't layed an egg for a week or more. She is an ISA so I thought maybe she had a stuck or broken egg as she lays huge ones. The first night she was sick she couldn't get on the roost so she slept in the floor. The next day I thought maybe it was vent gleet. All the gross symptoms. So I gave her some yogurt and vinegar in the water. She ate and was alert and feeling better. Today her legs and feet are swollen with clear liquid meaning from the scales. I don't see any signs of Bumble foot. What can I do for her?